DISPENSING ALLYL ISOTHIOCYANATE AS AN ATTRACTANT FOR TRAPPING CRUCIFER-FEEDING FLEA BEETLES

Abstract

AbstractRelease of allyl isothiocyanate through the red rubber sleeve-type stoppers of small serum vials was found to be an effective and convenient method of dispensing this attractant from traps used to catch crucifer-feeding flea beetles. Liquid allyl isothiocyanate in a vial was conducted upwards by capillary action through a length of pipestem cleaner, absorbed by the rubber stopper and given off as a vapor from its outer surface. Release rates were affected by extent of exposure to solar or other radiant heat energy, time, and the thickness of stoppers.